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Below are monthly rents paid by 30 students who live off campus.
630 630 630 830 600 490
590 930 640 520 620 580
460 640 550 560 750 820
500 520 660 590 610 400
630 700 720 740 620 650
a). Using Excel, find the mean, median, mode, and standard deviation. (Round your answers to 2 decimal places)
Descriptive Statistics Data
Mean _______
Median _______
Mode _______
Standard Deviation _______
b). Use Excel or MegaStat to sort and standardize the data. What is the z-score for the following rent value? (Round your answer to 2 decimal places)
Rent Value z-Score
740 ________
A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2823 occupants not wearing seat belts, 31 were killed. Among 7765 occupants wearing seat belts, 16 were killed.
Of the firms that provided blogs/forums as a marketing tool, the accompanying table gives a breakdown on the entity responsible for creating the blogs/forums. Use a graphical method to describe the data summarized in the table. Interpret the graph..
Complete the simulation Applying Time Series Methodologies located on . During the third cycle of the simulation, you will need to make a decision regarding sales forecasts for Blues Inc.
Refer to Productivity improvement Problem 16.7. The economist also has information on annual productivity improvement in the prior year and wishes to use this information as a concomitant variable. The data on the prior year's productivity im..
The sample size formula for a confidence interval for the population mean requires an estimate of the population standard deviation.- why is the required sample size larger if the population standard deviation is larger.
An educational software company wants to compare the effectiveness of its computer animation for teaching creative writing with that of a textbook presentation.
If a country wants to set the mileage limit at a point such that 80% of the tourists in the program will want to drive fewer kilometers, what should the limit be?
a. First, are these statistics given by United describing the parent population or a sample? b. Define appropriate null and alternative hypotheses.
Pregnancy. In 1998 a San Diego reproductive clinic reported 49 live births to 207 women under the age of 40 who had previously been unable to conceive.
the study obtained a measure to determine how comfortable the shopper was in a store. Higher scores indicated greater comfort. Suppose the following data were collected. Use a = .05 to test for differences among comfort levels for three types of b..
1 a student studying for a vocabulary test knows the meanings of 14 words from a list of 20 words. if the test contains
Does a stem-and-leaf plot provide sufficient information to determine whether or not a dataset contains an outlier? Explain.
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